[meteorite-list] Craterfield in the SE part of the Egyptian Desert

[bernd.pauli at paulinet.de]

Good morning List,

I wrote yesterday:

> It would be interesting to verify how far away these structures are from
> the BP and Oasis structures, and, thus, by extension, from the Libyan
> Desert Glass strewn field !

Michel Franco responded:

> They are not so far from the BP and Oasis structure (are those 2 stuctures 
> contemporaneous?) which are South South West of the Libyan Glass Strewnfield.


The age(s) of the BP (= British Petroleum) and Oasis structures have not
yet been exactly determined, there is only an upper limit of about 120 Ma.

LDG has an age of "only" ~28 Ma, which would imply that there is no relationship.

C. Koeberl, on the other hand, found that  LDG major- and trace-element abundances
and Sr- and Nd-isotopic compositions of the rocks from the B.P. and Oasis impact
structures in eastern Libya and those of LDGs are similar.

But Koeberl is hesitant about confirming a direct relationship because
of the lack of age information for the two Libyan structures.

Best wishes,

Bernd